A.Non automatic discharge overboard of machinery space bilge water
B.Automatic discharge overboard of machinery space bilge water
C.A and B
D.Neither A nor B
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A.open
B.close
C.remain in its position
D.flood the evaporator with refrigerant
A.low water level
B.low oil pressure
C.excessively high fuel pressure
D.an improper air/fuel ratio
A.Condenser leakage
B.A shortage of liquid refrigerant
C.Excessive frost on the evaporator
D.Not enough condenser cooling water
A.high discharge pressure
B.frosting of the crankcase
C.high temperature of the overboard water
D.low suction pressure of compressor
A.upper part of the receiver
B.upper part of the condenser
C.down stream end of the cooling coil
D.outlet end of the condenser
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An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of ().
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will ().
The major source of chemical contaminants in hydraulic fluid is ().
The control mode in which the final control element is moved from one of two flexed positions to the other is known as ().
A pressure drop through the refrigerant liquid line may cause ().
The usual symptoms of cavitation in a centrifugal pump is ().
The general purpose of a heat exchanger is to ().
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by ().
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is ().
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?()